--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/uts/common/disp/thread_intr.c	Fri Feb 17 17:24:21 2006 -0800
@@ -0,0 +1,115 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*
+ * FILE NOTICE BEGIN
+ *
+ * This file should not be modified.  If you wish to modify it or have it
+ * modified, please contact Sun Microsystems at <[email protected]>
+ * (without anti-spam dashes)
+ *
+ * FILE NOTICE END
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/cpuvar.h>
+#include <sys/stack.h>
+#include <vm/seg_kp.h>
+#include <sys/proc.h>
+#include <sys/pset.h>
+#include <sys/sysmacros.h>
+
+/*
+ * Create and initialize an interrupt thread.
+ */
+static void
+thread_create_intr(cpu_t *cp)
+{
+	kthread_t *tp;
+
+	tp = thread_create(NULL, 0,
+	    (void (*)())thread_create_intr, NULL, 0, &p0, TS_ONPROC, 0);
+
+	/*
+	 * Set the thread in the TS_FREE state.  The state will change
+	 * to TS_ONPROC only while the interrupt is active.  Think of these
+	 * as being on a private free list for the CPU.  Being TS_FREE keeps
+	 * inactive interrupt threads out of debugger thread lists.
+	 *
+	 * We cannot call thread_create with TS_FREE because of the current
+	 * checks there for ONPROC.  Fix this when thread_create takes flags.
+	 */
+	THREAD_FREEINTR(tp, cp);
+
+	/*
+	 * Nobody should ever reference the credentials of an interrupt
+	 * thread so make it NULL to catch any such references.
+	 */
+	tp->t_cred = NULL;
+	tp->t_flag |= T_INTR_THREAD;
+	tp->t_cpu = cp;
+	tp->t_bound_cpu = cp;
+	tp->t_disp_queue = cp->cpu_disp;
+	tp->t_affinitycnt = 1;
+	tp->t_preempt = 1;
+
+	/*
+	 * Don't make a user-requested binding on this thread so that
+	 * the processor can be offlined.
+	 */
+	tp->t_bind_cpu = PBIND_NONE;	/* no USER-requested binding */
+	tp->t_bind_pset = PS_NONE;
+
+#if defined(__i386) || defined(__amd64)
+	tp->t_stk -= STACK_ALIGN;
+	*(tp->t_stk) = 0;		/* terminate intr thread stack */
+#endif
+
+	/*
+	 * Link onto CPU's interrupt pool.
+	 */
+	tp->t_link = cp->cpu_intr_thread;
+	cp->cpu_intr_thread = tp;
+}
+
+/*
+ * Allocate a given number of interrupt threads for a given CPU.
+ * These threads will get freed by cpu_destroy_bound_threads()
+ * when CPU gets unconfigured.
+ */
+void
+cpu_intr_alloc(cpu_t *cp, int n)
+{
+	int i;
+
+	for (i = 0; i < n; i++)
+		thread_create_intr(cp);
+
+	cp->cpu_intr_stack = (caddr_t)segkp_get(segkp, INTR_STACK_SIZE,
+		KPD_HASREDZONE | KPD_NO_ANON | KPD_LOCKED) +
+		INTR_STACK_SIZE - SA(MINFRAME);
+}